scholarly journals Controlling the Co-S Coordination Environment in Co-Doped WS2 Nanosheets for Electrochemical Oxygen Reduction

2021 ◽  
Author(s):  
Wei Hong ◽  
Erika Meza ◽  
Christina W. Li
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Cobalt Sulfide ◽  
Coordination Environment ◽  
Electrocatalytic Oxygen Reduction ◽  
Ws2 Nanosheets ◽  
Co Doped ◽  
Electrochemical Oxygen

Cobalt sulfide nanomaterials are among the most active and stable catalysts for the electrocatalytic oxygen reduction reaction in pH 7 electrolyte. However, due to the complexity and dynamism of the...

Ultrafine Mo2C Nanoparticles Embedded in MOF Derived N and P co-doped Carbon Matrix for Efficient Electrocatalytic Oxygen Reduction Reaction in Zinc-Air Batteries

Nanoscale ◽  
2022 ◽  
Author(s):  
Lin Ye ◽  
Yiran Ying ◽  
Dengrong Sun ◽  
Jinli Qiao ◽  
Haitao Huang
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Carbon Matrix ◽  
Reduction Reaction ◽  
Electrocatalytic Oxygen Reduction ◽  
Energy Conversion And Storage ◽  
Storage Technologies ◽  
And Storage ◽  
Co Doped ◽  
Zinc Air Batteries

Exploring high-activity electrocatalysts for oxygen reduction reaction (ORR) is of great significance for a variety of renewable energy conversion and storage technologies. Here, ultrafine Mo2C nanoparticles assembled in N and...

Template assisted synthesis of Ni,N co-doped porous carbon from Ni incorporated ZIF-8 frameworks for electrocatalytic oxygen reduction reaction

2020 ◽  
Vol 44 (28) ◽  
pp. 12343-12354
Author(s):  
Vaishna Priya K. ◽  
Minju Thomas ◽  
Rajith Illathvalappil ◽  
Shijina K. ◽  
Sreekumar Kurungot ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Alkaline Medium ◽  
Porous Carbon ◽  
Reduction Reaction ◽  
Electrocatalytic Oxygen Reduction ◽  
Template Assisted Synthesis ◽  
Co Doped

Ni,N co-doped porous carbon derived from nickel containing ZIF-8 frameworks for enhanced ORR performance in alkaline medium.

scholarly journals Active site engineering of single-atom carbonaceous electrocatalysts for the oxygen reduction reaction

2021 ◽  
Author(s):  
Guangbo Chen ◽  
Haixia Zhong ◽  
Xinliang Feng
Keyword(s):  
Fuel Cells ◽  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Active Site ◽  
Reduction Reaction ◽  
Single Atom ◽  
Electrocatalytic Oxygen Reduction ◽  
Electrochemical Storage ◽  
Conversion Technologies ◽  
Co Doped

Electrocatalytic oxygen reduction reaction (ORR) is the vital process in the cathode of next-generation electrochemical storage and conversion technologies, such as, metal-air batteries and fuel cells. Single-metal-atom and nitrogen co-doped...

scholarly journals Synergistic enhancement of nitrogen and sulfur co-doped graphene with carbon nanosphere insertion for the electrocatalytic oxygen reduction reaction

2015 ◽  
Vol 3 (15) ◽  
pp. 7727-7731 ◽  
Author(s):  
Min Wu ◽  
Jie Wang ◽  
Zexing Wu ◽  
Huolin L. Xin ◽  
Deli Wang
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Methanol Tolerance ◽  
Long Term Stability ◽  
Synergistic Enhancement ◽  
Electrocatalytic Oxygen Reduction ◽  
Doped Graphene ◽  
Co Doped

A nitrogen and sulfur co-doped graphene/carbon black nanocomposite with high electrocatalytic activity for the oxygen reduction reaction and superior long-term stability and methanol tolerance compared to commercial Pt/C.

Cobalt Nanoparticles Embedded in N, S Co‐Doped Carbon towards Oxygen Reduction Reaction Derived by in situ Reducing Cobalt Sulfide

ChemCatChem ◽  
2019 ◽  
Vol 11 (24) ◽  
pp. 6039-6050 ◽  
Author(s):  
Zhun Dong ◽  
Mingxuan Li ◽  
Wanli Zhang ◽  
Yujie Liu ◽  
Yao Wang ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Reduction Reaction ◽  
Cobalt Nanoparticles ◽  
Cobalt Sulfide ◽  
Co Doped

N and S Co-doped Ordered Mesoporous Carbon: An Efficient Electrocatalyst for Oxygen Reduction Reaction in Microbial Fuel Cells

2020 ◽  
Vol 16 (4) ◽  
pp. 625-638
Author(s):  
Leila Samiee ◽  
Sedigheh Sadegh Hassani
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Microbial Fuel Cells ◽  
Carbon Materials ◽  
Reduction Reaction ◽  
Carbon Substrate ◽  
Promising Candidate ◽  
X Ray ◽  
Carbon Framework ◽  
Co Doped

Background: Porous carbon materials are promising candidate supports for various applications. In a number of these applications, doping of the carbon framework with heteroatoms provides a facile route to readily tune the carbon properties. The oxygen reduction reaction (ORR), where the reaction can be catalyzed without precious metals is one of the common applications for the heteroatom-doped carbons. Therefore, heteroatom doped catalysts might have a promising potential as a cathode in Microbial fuel cells (MFCs). MFCs have a good potential to produce electricity from biological oxidization of wastes at the anode and chemical reduction at the cathode. To the best of our knowledge, no studies have been yet reported on utilizing Sulfur trioxide pyridine (STP) and CMK-3 for the preparation of (N and S) doped ordered porous carbon materials. The presence of highly ordered mesostructured and the synergistic effect of N and S atoms with specific structures enhance the oxygen adsorption due to improving the electrocatalytic activity. So the optimal catalyst, with significant stability and excellent tolerance of methanol crossover can be a promising candidate for even other storage and conversion devices. Methods: The physico-chemical properties of the prepared samples were determined by Small Angle X-ray Diffraction (SAXRD), N2 sorption-desorption, Transmission Electron Microscopy (TEM), Field Emission Scanning Electron Microscopy (FESEM) and X-ray Photoelectron Spectroscopy (XPS). The prepared samples were further applied for oxygen reduction reaction (ORR) and the optimal cathode was tested with the Microbial Fuel Cell (MFC) system. Furthermore, according to structural analysis, The HRTEM, and SAXRD results confirmed the formation of well-ordered hexagonal (p6mm) arrays of mesopores in the direction of (100). The EDS and XPS approved that N and S were successfully doped into the CMK-3 carbon framework. Results: Among all the studied CMK-3 based catalysts, the catalyst prepared by STP precursor and pyrolysis at 900°C exhibited the highest ORR activity with the onset potential of 1.02 V vs. RHE and 4 electron transfer number per oxygen molecule in 0.1 M KOH. The high catalyst durability and fuel-crossover tolerance led to stable performance of the optimal cathode after 5000 s operation, while the Pt/C cathode-based was considerably degraded. Finally, the MFC system with the optimal cathode displayed 43.9 mW·m-2 peak power density showing even reasonable performance in comparison to a Pt/C 20 wt.%.cathode. Conclusions: The results revealed that the synergistic effect of nitrogen and sulfur co-doped on the carbon substrate structure leads to improvement in catalytic activity. Also, it was clearly observed that the porous structure and order level of the carbon substrate could considerably change the ORR performance.

Sulfur and nitrogen co-doped rGO sheets as efficient electrocatalyst for oxygen reduction reaction in alkaline medium

2021 ◽  
pp. 108338
Author(s):  
Gokuladeepan Periyasamy ◽  
Karthigeyan Annamalai ◽  
Indrajit M. Patil ◽  
Bhalchandra Kakade
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Alkaline Medium ◽  
Reduction Reaction ◽  
Co Doped

Topological defects involving Fe/N co-doped mesoporous carbon nanosheets as novel electrocatalysts for the oxygen reduction reaction and Zn–air batteries

Nanoscale ◽  
2021 ◽  
Author(s):  
Junjie Ding ◽  
Dongchuang Wu ◽  
Senhe Huang ◽  
Chenbao Lu ◽  
Yu Chen ◽  
...  
Keyword(s):  
Oxygen Reduction Reaction ◽  
Oxygen Reduction ◽  
Topological Defects ◽  
Reduction Reaction ◽  
Defect Engineering ◽  
Carbon Nanosheets ◽  
Renewable Energy Technologies ◽  
Central Focus ◽  
Energy Technologies ◽  
Co Doped

Developing effective electrocatalysts for oxygen reduction reaction is of great significance for clean and renewable energy technologies, such as metal–air batteries and fuel cells. Defect engineering is the central focus...

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